Ark-0
Ark-0 is a test network for trying things out. It may be reset at any time.

Block 19376

Hash
000000d86f5e99b11d0ad1e765de68fc4ca40efdf30fdeae235e4851bfb24608
Confirmations
22092
Time
2026-10-10 11:15:35 UTC
Median time
2026-10-10 11:06:52 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
bcbe873c64dda8491f9309be61ddb4b2b96f872b49f1465b25626da52f2ce7d2
Previous block
000000070811f4746e907572ad57f0279b4b82e615e43b9bc7702368d81d619f
Next block
0000011be13260908951004d02329ff067c89b797ab6f67e08cb2975b57dcbe5

ML-DSA-44 block signature (M2)

M2 is an experimental rule of this test network. From a height set in its build, a node that enforces M2 accepts a block only if, besides the classical signet signature, the block carries a valid ML-DSA-44 signature by the Ark-0 block key, in its coinbase's witness commitment output. This page shows that signature; it does not check it.

Block 19376 is below the activation height 20000: nodes do not require this signature, and only log the result of checking it when run with -debug=validation. The block producer adds it from height 18000 on, so that nodes can check it before it is required.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
fcd2c6dddc9bc4444aae73f7c9315a11… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
bcbe873c64dd…6da52f2ce7d2 coinbase1250